gistfile1.txt

//
//  MenuCommandTestsApp.swift
//  MenuCommandTests
//
//  Created by Joseph Wardell on 8/16/23.
//

import SwiftUI

let SecondWindowIdentifier = "SecondWindowIdentifier"

@main
struct MenuCommandTestsApp: App {

    @Environment (\.openWindow) var openWindow

    var body: some Scene {
        WindowGroup {
            VStack(alignment: .leading) {

                    Text("On iOS, the openWindow envirionment instance that is passed to your command groups is not the same one that is passed to your app (as of iOS 16)")
                        .padding()

                    Text("In fact, the one passed to your command groups is apparently not aware of the SwiftUI lifecycle at all.")
                        .padding()

                    Text("One way to get around this is to pass the openWindow instance from your app down to your commands. This is ugly, but it works on both iOS and macOS.")
                        .padding()

                Button("You can use the same openWindow instance from here…") {
                    openWindow(id: SecondWindowIdentifier)
                }
                .padding()
            }
        }
        .commands {
            NewCommands(openWindowAction: openWindow)
        }

        WindowGroup("New Window opened using openWindow", id: SecondWindowIdentifier) {
            VStack {
                Text("This way, the window can be opened from either a button OR a menu item on either iOS or macOS")
                Text("Yes, it's an ugly hack.  More elegant suggestions are welcome.")
            }
        }
    }
}

struct NewCommands: Commands {

    let openWindowAction: OpenWindowAction

    var body: some Commands {
        CommandGroup (replacing: .newItem) {
            OpenNewWindowButton(openWindow: openWindowAction)
                .keyboardShortcut ("n", modifiers: [.command, .shift])
        }
    }
}

struct OpenNewWindowButton: View {
    let openWindow: OpenWindowAction
    @Environment (\.supportsMultipleWindows) private var canOpen
    var body: some View {
        if canOpen {
            Button {
                openWindow(id: SecondWindowIdentifier)
            } label: {
                Label ("…that you use from here", systemImage: "rectangle.badge.plus")
            }
        }
    }
}